Locked Hidden Triple
The three cells of a hidden triple fit inside a line and a box at once, so the eliminations reach both.
How it works on this board
3, 6 and 7 can appear only in the highlighted set of cells
5
9
2
8
8
1
2
9
2
3
6
9
8
4
5
6
3
1
7
2
6
7
6
4
4
5
2
3
2
5
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